Inlämning av Examensarbete / Submission of Thesis

Rikard Gunnarsson , pp. 56. ING/School of Engineering, 2003.

The work

Författare / Author: Rikard Gunnarsson
Titel / Title: Non-linear ultrasound investigation of extended plates
Abstrakt Abstract:

A non-linear ultrasound non-destructive testing method called Non-linear Wave Modulation Spectroscopy is studied. The method shows the non-linearity of the test specimen and can in that way detect cracks. It is at present non-localizing. For some particular objects like extended plates and long tubes, the whole object cannot be investigated in one sampling. It is for these objects important to know in which region the crack might be and one needs to know the wave field. In this report the wave field from an acoustic source in a plate is shown experimentally and numerically. Further, in order to obtain higher localisation to a small region the concept of a standing wave in a resonator can be studied.

Ämnesord / Subject: Maskinteknik - Mechanical Engineering\Structural Dynamics
Maskinteknik - Mechanical Engineering\General
Nyckelord / Keywords: Ultrasonic NDT, Non-linear acoustic testing, Non-linear non-destructive testing, Non-linear Wave Modulation Spectroscopy, Non-linear Elastic Wave Spectroscopy, Micro crack detection

Publication info

Dokument id / Document id:
Program:/ Programme Masters Programme in Mechanical Engineering 120 ECTS
Registreringsdatum / Date of registration: 06/04/2010
Uppsatstyp / Type of thesis: Masterarbete/Master's Thesis (120 credits)


Handledare / Supervisor: Claes Hedberg
Organisation / Organisation: Blekinge Institute of Technology
Institution / School: ING/School of Engineering

+46 455 38 50 00

Files & Access

Bifogad uppsats fil(er) / Files attached: rikard_030306.pdf (11861 kB, öppnas i nytt fönster)